:root{--bg:#07111d;--panel:#0d1d2d;--line:rgba(164,203,232,.14);--text:#f4f6f4;--muted:#9fb0c1;--accent:#efcb75;--cyan:#79c7df;--max:1380px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 75% 5%,#13334b 0,transparent 30%),linear-gradient(#07111d,#0a1623);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.stars{position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:radial-gradient(circle,#fff 1px,transparent 1.2px),radial-gradient(circle,#fff 1px,transparent 1.2px);background-position:0 0,37px 61px;background-size:113px 113px,173px 173px;mask-image:linear-gradient(#000,transparent 80%)}a{color:inherit}.topbar{height:78px;max-width:var(--max);margin:auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);position:relative;z-index:2}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand-mark{width:46px;height:46px;border:1px solid #efcb7588;border-radius:50%;display:grid;place-items:center;color:var(--accent);font-weight:800;font-size:13px}.brand b,.brand small{display:block}.brand b{font-size:14px}.brand small{font-size:11px;color:var(--muted);margin-top:3px}.topbar nav{display:flex;gap:28px}.topbar nav a{text-decoration:none;font-size:13px;color:#cad5de}.topbar nav a:hover{color:var(--accent)}
.hero{max-width:var(--max);margin:auto;padding:92px 24px 70px;display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center}.eyebrow{font-size:11px;letter-spacing:.2em;color:var(--accent);font-weight:800;margin:0 0 15px}.hero h1{font-size:clamp(48px,6.6vw,94px);line-height:.92;letter-spacing:-.055em;margin:0;font-weight:800}.hero h1 span{color:transparent;-webkit-text-stroke:1px #f4f6f477}.lead{font-size:18px;line-height:1.6;color:#b7c5d1;max-width:800px;margin:30px 0}.search{height:68px;border:1px solid #79c7df44;background:#0a1927cc;border-radius:18px;display:flex;align-items:center;max-width:850px;box-shadow:0 18px 55px #0004}.search:focus-within{border-color:#efcb75aa;box-shadow:0 18px 55px #0005,0 0 0 3px #efcb7512}.search>span{font-size:27px;color:#8fb4c8;margin-left:20px}.search input{flex:1;background:none;border:0;outline:0;color:#fff;font:inherit;font-size:17px;padding:0 18px}.search input::placeholder{color:#73889a}.search button{border:0;background:none;color:#7890a5;font-size:28px;padding:12px 20px;cursor:pointer}.quick{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.quick button{border:1px solid var(--line);background:#11263a77;color:#acbdca;border-radius:999px;padding:8px 12px;font-size:12px;cursor:pointer}.quick button:hover{color:var(--accent);border-color:#efcb7566}
.orbital{height:390px;position:relative;display:grid;place-items:center}.planet{width:176px;height:176px;border-radius:50%;background:radial-gradient(circle at 30% 25%,#f1d593,#d1a44e 35%,#543916 75%);box-shadow:0 0 80px #efcb7528,inset -25px -20px 45px #0006;color:#07111d;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:42px;font-weight:850;z-index:2}.planet span{font-size:10px;text-transform:uppercase;letter-spacing:.14em;text-align:center;line-height:1.45}.orbit{position:absolute;border:1px solid #79c7df33;border-radius:50%}.o1{width:320px;height:180px;transform:rotate(-20deg)}.o2{width:410px;height:245px;transform:rotate(35deg)}.stats{max-width:var(--max);margin:auto;padding:0 24px 88px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px}.stats article{padding:25px 30px;background:#0f1f30c2;border:1px solid var(--line);min-height:112px}.stats article:first-child{border-radius:18px 0 0 18px}.stats article:last-child{border-radius:0 18px 18px 0}.stats strong{font-size:27px;color:#f2dc9e;display:block}.stats span{font-size:12px;color:var(--muted);display:block;margin-top:8px}
.section{max-width:var(--max);margin:auto;padding:30px 24px 96px}.section-head{display:grid;grid-template-columns:1fr minmax(280px,520px);gap:40px;align-items:end;margin-bottom:30px}.section-head h2{font-size:42px;letter-spacing:-.035em;margin:0}.section-head>p{color:var(--muted);line-height:1.6;font-size:14px;margin:0}.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.category-card{min-height:150px;border:1px solid var(--line);background:linear-gradient(150deg,#12263add,#091724dd);border-radius:18px;padding:20px;text-align:left;color:inherit;cursor:pointer;transition:.2s;position:relative;overflow:hidden}.category-card:hover{transform:translateY(-2px);border-color:#efcb7555;background:linear-gradient(150deg,#162f46,#0a1a29)}.category-card b{display:block;font-size:16px;line-height:1.28;max-width:90%}.category-card span{position:absolute;bottom:18px;color:#8fa5b6;font-size:12px}.catalog-head{grid-template-columns:1fr auto}.result{text-align:right}.result strong{font-size:36px;color:var(--accent);display:block}.result span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.12em}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;padding:14px;background:#0d1d2db8;border:1px solid var(--line);border-radius:18px;margin-bottom:20px}.toolbar label{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:#7f94a6;display:flex;flex-direction:column;gap:5px;min-width:190px}.toolbar select{border:0;outline:0;color:#dbe4ea;background:#10243a;border-radius:10px;padding:9px 12px;font-size:13px}.ghost{margin-left:auto;align-self:end;border:1px solid var(--line);background:none;color:#b4c2ce;padding:10px 14px;border-radius:10px;cursor:pointer}.active-filter{margin:0 0 18px;color:#c5d3dd;font-size:13px}.active-filter button{margin-left:8px;border:0;background:#1b3850;color:#e5edf3;border-radius:999px;padding:5px 9px;cursor:pointer}.book-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.book-card{border:1px solid var(--line);background:#0c1c2bd1;border-radius:22px;overflow:hidden;display:flex;flex-direction:column;min-height:550px;transition:.2s}.book-card:hover{transform:translateY(-3px);border-color:#79c7df44;box-shadow:0 20px 55px #0003}.cover{height:280px;padding:26px;border:0;background:radial-gradient(circle at 50% 30%,#17324c,#091828 70%);display:grid;place-items:center;cursor:pointer;position:relative}.cover img{height:100%;max-width:100%;object-fit:contain;filter:drop-shadow(0 14px 17px #0007);transition:.25s}.book-card:hover .cover img{transform:scale(1.025)}.fallback{display:none;width:130px;height:190px;background:linear-gradient(160deg,#213e55,#0d2335);border:1px solid #38556a;border-radius:5px;box-shadow:0 16px 25px #0006;place-items:center;color:#c8a95f;font-weight:800;text-transform:uppercase;text-align:center;padding:18px;font-size:12px}.book-body{padding:20px;display:flex;flex-direction:column;flex:1}.meta{display:flex;gap:8px;color:#7f95a7;font-size:11px;text-transform:uppercase;letter-spacing:.08em}.meta span:not(:empty)+span:not(:empty)::before{content:"·";margin-right:8px}.title-btn{border:0;background:none;color:inherit;padding:0;text-align:left;cursor:pointer}.title-btn h3{font-size:18px;line-height:1.25;letter-spacing:-.02em;margin:11px 0 7px}.title-btn:hover h3{color:#f1d891}.author{min-height:18px;margin:0;color:#9db2c2;font-size:12px}.annotation{color:#9cabb8;font-size:13px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}.card-foot{margin-top:auto;padding-top:15px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:8px}.level{font-size:10px;background:#79c7df18;color:#9ecbd9;padding:5px 8px;border-radius:999px;max-width:62%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rko-link{font-size:11px;text-decoration:none;color:#e6cb82}.load-more{display:block;margin:28px auto 0;border:1px solid #efcb7558;background:#efcb7510;color:#f0d791;border-radius:14px;padding:13px 24px;cursor:pointer}.empty{text-align:center;padding:70px;color:#8da1b2}.empty b,.empty span{display:block;margin:5px}
#bookDialog{width:min(920px,calc(100vw - 28px));padding:0;border:1px solid #79c7df3b;border-radius:24px;background:#0c1b2a;color:#fff;box-shadow:0 30px 100px #0009}#bookDialog::backdrop{background:#02070dcc;backdrop-filter:blur(8px)}.dialog-close{position:absolute;right:15px;top:12px;z-index:3;width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:#0e2234;color:#fff;font-size:24px;cursor:pointer}.dialog-layout{display:grid;grid-template-columns:280px 1fr;min-height:500px}.dialog-cover{padding:36px;background:radial-gradient(circle at 50% 30%,#1b3a56,#091827);display:grid;align-items:center}.dialog-cover img{width:100%;max-height:410px;object-fit:contain;filter:drop-shadow(0 17px 20px #0008)}.dialog-cover .fallback{display:grid;margin:auto}.dialog-content{padding:42px 40px 34px}.dialog-content h2{font-size:34px;line-height:1.05;letter-spacing:-.04em;margin:0 0 12px}.dialog-author{color:#a6bac9}.dialog-tags{display:flex;flex-wrap:wrap;gap:7px;margin:20px 0}.dialog-tags span{font-size:11px;border:1px solid var(--line);padding:6px 9px;border-radius:999px;color:#adc2d0}.dialog-description{line-height:1.68;color:#c3ced6;font-size:14px}.dialog-actions{display:flex;gap:10px;margin-top:30px}.primary-link,.secondary-btn{border-radius:12px;padding:12px 16px;text-decoration:none;font-size:13px}.primary-link{background:#e7c66f;color:#101821;font-weight:700}.secondary-btn{border:1px solid var(--line);background:none;color:#c4d2dc;cursor:pointer}
footer{max-width:var(--max);margin:auto;border-top:1px solid var(--line);padding:34px 24px 46px;display:flex;justify-content:space-between;color:#8095a6;font-size:12px}footer b,footer span{display:block}footer b{color:#bccbd6;margin-bottom:5px}footer p{max-width:520px;text-align:right;line-height:1.5;margin:0}@media(max-width:1100px){.hero{grid-template-columns:1fr}.orbital{display:none}.book-grid{grid-template-columns:repeat(3,1fr)}.category-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:760px){.topbar nav{display:none}.topbar{height:68px}.hero{padding-top:62px;padding-bottom:48px}.hero h1{font-size:50px}.lead{font-size:15px}.search{height:60px}.stats{grid-template-columns:1fr 1fr;padding-bottom:66px}.stats article{padding:20px}.section{padding-bottom:70px}.section-head{grid-template-columns:1fr;gap:14px}.section-head h2{font-size:34px}.category-grid,.book-grid{grid-template-columns:1fr 1fr}.cover{height:230px}.toolbar{display:grid;grid-template-columns:1fr 1fr}.toolbar label{min-width:0}.ghost{margin-left:0}.dialog-layout{grid-template-columns:1fr}.dialog-cover{display:none}.dialog-content{padding:36px 24px}.dialog-content h2{font-size:29px}footer{display:block}footer p{text-align:left;margin-top:18px}}@media(max-width:520px){.hero h1{font-size:43px}.category-grid,.book-grid{grid-template-columns:1fr}.cover{height:320px}.toolbar{grid-template-columns:1fr}.stats strong{font-size:22px}}

/* Navigation & detail UX */
.topbar{position:sticky;top:0;max-width:none;padding-left:max(24px,calc((100vw - var(--max))/2 + 24px));padding-right:max(24px,calc((100vw - var(--max))/2 + 24px));background:#07111de8;backdrop-filter:blur(18px);z-index:20;box-shadow:0 1px 0 var(--line)}
.catalog-nav{display:flex;align-items:center;gap:16px;margin:-4px 0 14px;min-height:42px}.back-categories{border:0;background:none;color:#a9bac7;padding:0;cursor:pointer;font-size:13px}.back-categories:hover{color:var(--accent)}.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:#7f94a6;font-size:12px}.breadcrumb i{font-style:normal;color:#50677a}.breadcrumb .current{color:#cdd9e1}.breadcrumb em{font-style:normal;margin-left:5px;padding-left:12px;border-left:1px solid var(--line);color:#6f8799}
.category-card{display:flex;flex-direction:column}.category-card.active{border-color:#efcb7588;box-shadow:0 0 0 1px #efcb7524 inset}.cat-icon{font-size:22px;color:var(--accent);margin-bottom:13px}.category-card p{font-size:11px;line-height:1.45;color:#6f8798;margin:10px 0 35px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.category-card span{left:20px;right:20px;display:flex;justify-content:space-between;align-items:center}.category-card span i{font-style:normal;color:#d4bb79;font-size:15px}
.active-filter{display:flex;gap:8px;flex-wrap:wrap}.filter-chip{display:inline-flex;align-items:center;gap:7px;border:1px solid #79c7df2a;background:#0e2638;color:#bdd0dc;border-radius:999px;padding:6px 7px 6px 11px}.filter-chip small{font-size:9px;color:#6f8799;text-transform:uppercase;letter-spacing:.08em}.filter-chip button{margin:0;width:20px;height:20px;padding:0;display:grid;place-items:center}
.book-card{cursor:default}.book-card:focus-within{border-color:#efcb7566}.book-card .rko-link{white-space:nowrap}
.book-breadcrumb{display:flex;align-items:center;justify-content:space-between;margin:-8px 0 18px;color:#758b9d;font-size:11px}.book-breadcrumb button{border:0;background:none;color:#a8bdca;padding:0;cursor:pointer}.book-breadcrumb button:hover{color:var(--accent)}.dialog-cover{grid-template-rows:1fr auto}.dialog-cover-note{font-size:10px;color:#7991a5;text-align:center;line-height:1.45;padding-top:18px}.secondary-link{border:1px solid var(--line);color:#cbd7df;border-radius:12px;padding:12px 16px;text-decoration:none;font-size:13px}.secondary-link:hover{border-color:#79c7df66;color:#fff}.dialog-actions{flex-wrap:wrap}.book-pager{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}.book-pager button{min-height:72px;border:1px solid var(--line);background:#0d2233;color:#b8c8d3;border-radius:14px;padding:12px;text-align:left;cursor:pointer}.book-pager button:last-child{text-align:right}.book-pager button:disabled{opacity:.28;cursor:default}.book-pager span{font-size:10px;color:#71899b;text-transform:uppercase;letter-spacing:.08em;display:block;margin-bottom:5px}.book-pager b{font-size:11px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-pager button:not(:disabled):hover{border-color:#efcb7558;color:#f4dc9f}.similar-link{border:0;background:none;color:#e0c67f;padding:16px 0 0;cursor:pointer;font-size:12px;text-align:left}.similar-link:hover{text-decoration:underline}.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;border:1px solid #79c7df3b;background:#0b2032e8;color:#d4e1e8;box-shadow:0 14px 35px #0005;cursor:pointer;z-index:15;opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s}.to-top.show{opacity:1;transform:none;pointer-events:auto}.to-top:hover{border-color:#efcb7566;color:var(--accent)}
@media(max-width:760px){.topbar{padding-left:18px;padding-right:18px}.catalog-nav{align-items:flex-start;flex-direction:column;gap:6px}.breadcrumb em{display:none}.book-pager{grid-template-columns:1fr}.book-pager button:last-child{text-align:left}.dialog-actions{display:grid;grid-template-columns:1fr}.dialog-actions>*{text-align:center}.to-top{right:14px;bottom:14px}}

#bookDialog.fallback-open{position:fixed;inset:50% auto auto 50%;transform:translate(-50%,-50%);z-index:101;max-height:calc(100vh - 28px);overflow:auto;margin:0}.fallback-modal{overflow:hidden}.fallback-modal::before{content:"";position:fixed;inset:0;background:#02070dcc;backdrop-filter:blur(8px);z-index:100}

/* Cross-browser book overlay */
#bookDialog.book-dialog{position:fixed;inset:0;width:auto;max-width:none;height:auto;margin:0;padding:14px;border:0;border-radius:0;background:#02070dcc;backdrop-filter:blur(8px);z-index:100;display:grid;place-items:center;overflow:auto}
#bookDialog.book-dialog[hidden]{display:none}.dialog-shell{position:relative;width:min(920px,calc(100vw - 28px));border:1px solid #79c7df3b;border-radius:24px;background:#0c1b2a;color:#fff;box-shadow:0 30px 100px #0009;overflow:hidden}.modal-open{overflow:hidden}
#bookDialog.fallback-open{position:fixed;inset:0;transform:none;max-height:none}.fallback-modal::before{display:none}

/* Hero composition refinement */
@media (min-width:1101px){
  .hero{grid-template-columns:minmax(0,1.55fr) minmax(310px,.45fr);padding-top:72px;padding-bottom:64px;gap:28px;}
  .hero>div:first-child{padding-top:4px;}
  .hero h1{font-size:clamp(60px,5.45vw,80px);line-height:.94;max-width:1030px;white-space:nowrap;}
  .hero h1 span{display:block;font-size:.78em;line-height:1.05;white-space:nowrap;margin-top:10px;-webkit-text-stroke:1px #f4f6f477;}
  .hero .lead{margin-top:26px;max-width:760px;}
  .orbital{height:350px;transform:translate(-8px,-10px);}
  .planet{width:168px;height:168px;}
  .o1{width:300px;height:168px}.o2{width:385px;height:225px}
}
@media (max-width:1100px){.hero h1 span{display:block;white-space:normal;margin-top:6px}}
@media (max-width:520px){
  .hero h1 span{font-size:.72em;white-space:nowrap;letter-spacing:-.04em;margin-top:8px}
}